Sayyidah Umm al-Husayn (may Allah be pleased with her) said: I heard the Prophet (peace and blessings be upon him) saying: "Listen and obey, even if a slave is appointed as your ruler who leads you according to the Book of Allah." And I also heard him (peace and blessings be upon him) saying: "O Allah, forgive those who shave their heads." He (peace and blessings be upon him) said it three times. The people said: "And those who shorten their hair?" After the third time, he (peace and blessings be upon him) said: "And those who shorten their hair as well."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 21846